Brick-press



J. J. RIDDLE. BRICK MAGHIN Patented Apr. 1, 1 851.

UNITED STATES PATENT OFFICE.

JNO. J. RIDDLE, OF OOVINGTON, KENTUCKY.

BRICK-PRESS.

Specification of Letters Patent No. 8,021, dated April 1, 1851.

To all whom, it may concern Be it known that I, JOHN J. RIDDLE, of Covington, in the county of Kenton and State of Kentucky, have invented new and useful Improvements in Brick-Presses; and I do hereby declare the following to be a full, clear, andexact description of the nature, construction, and operation thereof, reference being had to the annexed draw ng, which makes .part of this specification, which drawing is a longitudinal section through the mold wheel and its appurtenances.

In order to the formation by simple pressure from untempered clay of bricks possessing the requisite unity and coherency of structure, it is absolutely essential that the pressure should be uniform throughout thelr entire mass. knowledge been attained except by the application of pistons on opposite sides of the brick, but this mode although (while the machinery remains in working order) adequate to theformation of a good article, is practically ineligible on, account of-its liability to clog and become deranged; The fact is a brick machine should have as few Working joints as possible, especially on those parts which are in immediate connection with the clay. Machines in which the bricks are formed either in the circumference of a large wheel or in a straight bed of molds in connectioniwith a wheel by a simple rolling motion, have "the requisite simplicity, but the pressure not being applied to all parts of the clay at once the mass while being pressed down at one part, rises up at other parts which have passed the point of p'ressureit cracks and becomes unequal in consistence and having once taken its set no pressure afterward is adequate to rectify the defect. These difii- This result has never to my struction of the feed trough cl and its appendages; the trough is made to gradually narrow .untll 1t comes closely in contact with the rim of the wheel, and is thence extended forward in the form of a lip or flange 6 hugging closely the wheel, and made to bear hard up againstit, so that the clay after its introduction into the trough, is squeezed into a smaller and smaller compass, as it descendsand by this means is pressed forcibly into the mold, until coming in contact with the lip, the entire mass receives its ultimate compression powerfully and equally applied in every part.

Having thus fully described the nature of my invention what I claim herein as new and desire to secure by Letters Patent is,

' The lip e hugging closely the rim of a wheel containing molds, the said lip being a prolongation of a gradually narrowing feed trough formed and operated after the manner and for the purposes substantially as herein described, namely; the formation (by pressure of untempered clay) of a uniform and coherent brick.

, In testimony whereof, I have hereunto set my hand before two subscribing witnesses. a JOHN J. RIDDLE.

Witnesses:

GEo. H. KNIGHT, JAS. L. SINGER. 

